Rails: An Overview Rails (@rails_xyz) is a hybrid perpetual futures (perps) DEX built on Kraken's Ink L2 (an Optimism-based chain), combining CEX-like sub-millisecond execution speeds with full on-chain custody for user funds. It supports up to 100x leverage on crypto assets, zero gas fees, and features like limit orders and audited smart contract wallets. Backed by $20.2 million from investors including Kraken Ventures, CMCC Global, Slow Ventures, and Round13 Capital, it has